Final Exam 2 (20%)

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A string p is a prefix of a string s if the leading characters of s are identical to p. For example, "abc" is a prefix of "abcde". Develop a function prefix that checks if a C string p is a prefix of another C string s.

p是s的前綴若s開頭的一段字串等於p。例如，"abc"是"abcde"的前綴。寫一個程式 判斷字串p是否字串s的前綴。

Example input 1:

abc
abcde

Example output 1:

abc is a prefix of abcde

 

Example input 2:

bc
abcde

Example output 2:

bc is not a prefix of abcde

 

[Exam] asked in Final Exam
ID: 42299 - Available when: 2018-01-17 14:00 - Due to: Unlimited
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Hidden content!
#include    *  * *    
#include  ** ** *   * ** 
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int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

n=  **********  * 

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}

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{
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}
answered by (323 points)
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
** *  ***   * * *** *  c;
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    }
**    *** **  *     ***    ** ** * 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
****   * * **   **    ** *  * n,count;
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** *** *   *  ** * ** *****  
******    ****    ** ****  * * ** 0;
}
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prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
             ^
prog.c:8:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
                ^
prog.c:10:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(prefix);++i)
               ^~~~~~
prog.c:10:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:10:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:18:6: error: expected '(' before 'printf'
      printf("%s is a prefix of %s",prefix,word);
      ^~~~~~
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Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
**  **** * *  ***  *   * ** **  *** a[100],b[100];
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    }


}
answered by (-329 points)
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prog.c: In function 'main':
prog.c:5:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:5:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
prog.c:7:8: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     l1=strlen(a);
        ^~~~~~
prog.c:7:8: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:8: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
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prog.c: In function 'main':
prog.c:6:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
    ***    * *   * * ** **
int main(void)
{

  ** **** * ***  **  **** pre[100];
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printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 points)
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prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
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Hidden content!
#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main ()
{
*  **  ** *  * **   *** ****  pre [100],a[100];
**    *  ***    * *   **** n ,i;
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***  * *  ** * * *** * ** **  **  * **  *******   ** ** ** ****** *** * *** * ******  
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****  *   *  * ** *       **
    *  * ** ****** ****   **   ** ****  ********  *  *    **** ***   ****

 ** * **  **  *** ***  **** * 0;
}
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Hidden content!
#include <stdio.h>
#include *** **** * **  
#include *** *  ** ***     

int main()
{
    **   **  * ** * * *** **  *** a[100];

  * *         *  ** ** *     b[100];

  *  ** ** *** *  * *   * **   *  ** ***  * %s", a, b);

* *  * ***  *  ***   * ****  len_a = strlen(a);

 * ** *   ***  *** * *****   i = 0;

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** * * **      * *  *  *   ***  = 0; i < len_a; i++)
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** **  *  * *  **     ** ** ** ***   * **  *******   
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** *   ** ** *  **** *    **** * * * * **** *****   **   
  *   * *   ***    ******   *

* ***  *   * *   * *      *  ** *    == 0)
* *  * *******  ** *   *  **
*** * ****** ** **** **** ****** **  *** **** ***  *  *    ** * * is not a prefix of %s", a, b);
*  * * *   ***  ****  ***     *
* *  *** * *  * * *    * ***  *
  *    * * *  *  **** ***  *
***  ** **    *  *   * ***** * *  *  * * ** ****  **  * * ** ***  is a prefix of %s", a, b);
   * * ** *  *** ***  *******   
  * ***  ***  *  *   *  *** 0;
}
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Hidden content!
#include<stdio.h>
  ***  *  ** ** 
int main()
{
**    * *  *   * **  *  ****  * i,n;
    ****  *** ****  *   **  *** p[100],s[100],a[100]={};
*     ** * **** *** ** *   *  **   *   ** %s",p,s);
**   * ******* ***  *   * **      *
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** **  ***    *** *  * **  *
** * * * *     ******  * ** ** *  * *  * *      ****   ** **  
  *   ** *    *    *** ***  * *  0;
}
answered by (54 points)
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
    int i;
    char a[100];
    char b[100];
* **   * *     *   *     ****** *   * * ** * 
    scanf("%s",b);
    for(i=0;i<strlen(a);i++)
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*     * *    **** ** *     *  * * *  *  ***** ******  * **  *  *   * *    * ***** *   ** ***  * **   **  **  ***
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**   *  * ** *   ***   * *  * *  *       **** ** * **  *** * **** ****  * ** **** **** *   *  ***  *** *       ***** *** 
* *   *   * * *    ** *  ***** *      **** *  * ** **   ****** * **  * *** * ** *** ****  * **  == b[strlen(a)-1])
*   *  **** *    *  * *   ***  * * *****   ***  ***  **   ** *  * * * ** *** * ** **        * * **   ** * 
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******  * **        *******   *   **  ******* * * * *  **  *****  *** *  * * ** * * ** **   * * * * * *  *   * * *   *   * ** ** 
 ** * *  * ** **  * * *    *  * * *  ***      *   **  *** **   **     ** *** **   **** **   *  ***   *  ** ** * * * * 
*** * ***   **  ** *** *  *   * *    *  *     ** *    
}
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Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define n 100

int aa(char a[],char b[]){
 *     * * ***  *  * *  ****   *  ** *   i;
**    *  *** *  ** *** **      **** (a[0]!=b[0]){
*          **** ** * **** * * * *  **  ****  ****   ** 0;
  ***  ** **  ** ***** ******   
*   *** ** * **  ***  ** ** *** * ******* * *       * 
** ***  *   *  *** * ***** ** * *   * *  *** * *** *** **    *       *** a[i]==b[i])
        * *** **** *** *  * * * *  *  ****  ***  *
    * * *   * *****  ** ** *   ***  **** **  *   * **  ****   * * **  *  ** *  *  ** 1;
*  *** * ** **** ****** *****  *     *      ** * * ** * * *  * *  * ***** ** *** *** **
 ***      * **   * **   *  * ***     * * *  ** ** *  ** *   
*** ****  **  **** ** *****   * * ***
 **    *  ** *  ** ***  *  **** *    * 0;

}

int main(){
 ***** *  *** * *** *** ** c[n],d[n],e[n];
*  *  *  ** **  ***     **  *  **  i;
* *    *  ****  *** **  ***       * ***** %s",c,d);

*   *  ***** **       *      
 * *    ** ***  *   **  *** *     ***       ****  *   *      *****   ** is a prefix of %s",c,d);

  * *  **     ****  *  ** 
*  **  ** *  * * ***** ******* *  **** **** *     ** ** * *    is not a prefix of %s",c,d);


}
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